diff --git a/doc/clients-howto b/doc/clients-howto
index a21ddb7a..2a986e37 100644
--- a/doc/clients-howto
+++ b/doc/clients-howto
@@ -174,6 +174,10 @@ sending "aborted\n".  The server treats these conditions specially, as
 described below.  Anything else is either a command or input for a
 command, depending on how the server prompts for the line.
 
+emp_client signals `EOF' when it encounters an end-of-file condition
+while reading player input.  It signals `interrupt' when it catches
+SIGINT, which is normally triggered by Ctrl-C.
+
 The following ids occur:
 
 * Command prompt C_PROMPT